[INFO] crate fibers_tasque 0.1.1 is already in cache
[INFO] extracting crate fibers_tasque 0.1.1 into work/ex/pr-57967/sources/master#c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54/reg/fibers_tasque/0.1.1
[INFO] extracting crate fibers_tasque 0.1.1 into work/ex/pr-57967/sources/try#7fea0229842e79db1159ea58ad9a653b288efee9/reg/fibers_tasque/0.1.1
[INFO] validating manifest of fibers_tasque-0.1.1 on toolchain master#c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of fibers_tasque-0.1.1 on toolchain try#7fea0229842e79db1159ea58ad9a653b288efee9
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+7fea0229842e79db1159ea58ad9a653b288efee9-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing fibers_tasque-0.1.1
[INFO] finished frobbing fibers_tasque-0.1.1
[INFO] frobbed toml for fibers_tasque-0.1.1 written to work/ex/pr-57967/sources/master#c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54/reg/fibers_tasque/0.1.1/Cargo.toml
[INFO] started frobbing fibers_tasque-0.1.1
[INFO] finished frobbing fibers_tasque-0.1.1
[INFO] frobbed toml for fibers_tasque-0.1.1 written to work/ex/pr-57967/sources/try#7fea0229842e79db1159ea58ad9a653b288efee9/reg/fibers_tasque/0.1.1/Cargo.toml
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+7fea0229842e79db1159ea58ad9a653b288efee9-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+7fea0229842e79db1159ea58ad9a653b288efee9-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing fibers_tasque-0.1.1 against master#c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54 for pr-57967
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-57967/worker-2/master#c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-57967/sources/master#c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54/reg/fibers_tasque/0.1.1:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54-alt" "build" "--frozen"`
[INFO] [stdout] fdc5bb85bad31ea37eaab81ca48aa7db3ad1cb3a13810cf30046ae09e753bda7
[INFO] running `"docker" "start" "-a" "fdc5bb85bad31ea37eaab81ca48aa7db3ad1cb3a13810cf30046ae09e753bda7"`
[INFO] [stderr]    Compiling syn v0.15.26
[INFO] [stderr]    Compiling procinfo v0.4.2
[INFO] [stderr]    Compiling trackable_derive v0.1.2
[INFO] [stderr]    Compiling trackable v0.2.21
[INFO] [stderr]    Compiling prometrics v0.1.11
[INFO] [stderr]    Compiling tasque v0.1.4
[INFO] [stderr]    Compiling fibers_tasque v0.1.1 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 22.21s
[INFO] running `"docker" "inspect" "fdc5bb85bad31ea37eaab81ca48aa7db3ad1cb3a13810cf30046ae09e753bda7"`
[INFO] running `"docker" "rm" "-f" "fdc5bb85bad31ea37eaab81ca48aa7db3ad1cb3a13810cf30046ae09e753bda7"`
[INFO] [stdout] fdc5bb85bad31ea37eaab81ca48aa7db3ad1cb3a13810cf30046ae09e753bda7
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-57967/worker-2/master#c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-57967/sources/master#c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54/reg/fibers_tasque/0.1.1:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54-alt" "test" "--frozen" "--no-run"`
[INFO] [stdout] 5aa3555e9ebbe633ce66bafbe9893b06108ac1840c0cbbef93c0e56a072c3e2d
[INFO] running `"docker" "start" "-a" "5aa3555e9ebbe633ce66bafbe9893b06108ac1840c0cbbef93c0e56a072c3e2d"`
[INFO] [stderr]    Compiling fibers_tasque v0.1.1 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.79s
[INFO] running `"docker" "inspect" "5aa3555e9ebbe633ce66bafbe9893b06108ac1840c0cbbef93c0e56a072c3e2d"`
[INFO] running `"docker" "rm" "-f" "5aa3555e9ebbe633ce66bafbe9893b06108ac1840c0cbbef93c0e56a072c3e2d"`
[INFO] [stdout] 5aa3555e9ebbe633ce66bafbe9893b06108ac1840c0cbbef93c0e56a072c3e2d
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-57967/worker-2/master#c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-57967/sources/master#c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54/reg/fibers_tasque/0.1.1:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54-alt" "test" "--frozen"`
[INFO] [stdout] 80012b1c5da066c4755e121a334d254290eb820853b8e022ec92e560ee4d63a1
[INFO] running `"docker" "start" "-a" "80012b1c5da066c4755e121a334d254290eb820853b8e022ec92e560ee4d63a1"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.07s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/fibers_tasque-f1f9f22249d39cf1
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stderr] thread '<unnamed>' panicked at 'explicit panic', src/lib.rs:50:63
[INFO] [stderr] stack backtrace:
[INFO] [stderr]    0:     0x55c241ceb783 - std::sys::unix::backtrace::tracing::imp::unwind_backtrace::hb587d2734f1dc7c5
[INFO] [stderr]                                at src/libstd/sys/unix/backtrace/tracing/gcc_s.rs:39
[INFO] [stderr]    1:     0x55c241ce748b - std::sys_common::backtrace::_print::he39717f7cfbd122d
[INFO] [stderr]                                at src/libstd/sys_common/backtrace.rs:70
[INFO] [stderr]    2:     0x55c241cea436 - std::panicking::default_hook::{{closure}}::hb7f1ae5149814e5e
[INFO] [stderr]                                at src/libstd/sys_common/backtrace.rs:58
[INFO] [stderr]                                at src/libstd/panicking.rs:200
[INFO] [stderr]    3:     0x55c241cea1b4 - std::panicking::default_hook::hc2b73d8ffc772b35
[INFO] [stderr]                                at src/libstd/panicking.rs:215
[INFO] [stderr]    4:     0x55c241ceab40 - std::panicking::rust_panic_with_hook::h625072734a147d22
[INFO] [stderr]                                at src/libstd/panicking.rs:478
[INFO] [stderr]    5:     0x55c241cdb517 - std::panicking::begin_panic::h31553234c6cf0339
[INFO] [stderr]                                at /rustc/c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54/src/libstd/panicking.rs:412
[INFO] [stderr]    6:     0x55c241bc1bcc - fibers_tasque::test::it_works::{{closure}}::h920272881cacb5d0
[INFO] [stderr]                                at src/lib.rs:50
[INFO] [stderr]    7:     0x55c241bc0653 - <tasque::queue::TaskQueue as fibers_tasque::async::TaskQueueExt>::async_call::{{closure}}::h361bb3a018762edb
[INFO] [stderr]                                at src/async.rs:27
[INFO] [stderr]    8:     0x55c241bbeaca - tasque::task::Task::new::{{closure}}::h9bb68b4f9136afc8
[INFO] [stderr]                                at /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/tasque-0.1.4/src/task.rs:21
[INFO] [stderr]    9:     0x55c241bff098 - tasque::task::Task::execute::h3d11cffeff0d4a2b
[INFO] [stderr]                                at /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/tasque-0.1.4/src/task.rs:31
[INFO] [stderr]   10:     0x55c241c2fc9f - tasque::worker::Worker::run_once::{{closure}}::h62c466864985eddb
[INFO] [stderr]                                at /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/tasque-0.1.4/src/worker.rs:25
[INFO] [stderr]   11:     0x55c241bfdf75 - prometrics::metrics::histogram::Histogram::time::hf987c66b75fb593d
[INFO] [stderr]                                at /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/prometrics-0.1.11/src/metrics/histogram.rs:101
[INFO] [stderr]   12:     0x55c241c2fb8d - tasque::worker::Worker::run_once::h72eea85ad34a88ef
[INFO] [stderr]                                at /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/tasque-0.1.4/src/worker.rs:25
[INFO] [stderr]   13:     0x55c241c2fa12 - tasque::worker::Worker::start::{{closure}}::h133bd7550b3fd204
[INFO] [stderr]                                at /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/tasque-0.1.4/src/worker.rs:17
[INFO] [stderr]   14:     0x55c241c15bc7 - std::sys_common::backtrace::__rust_begin_short_backtrace::hf8c91292d384ce38
[INFO] [stderr]                                at /rustc/c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54/src/libstd/sys_common/backtrace.rs:135
[INFO] [stderr]   15:     0x55c241c021c5 - std::thread::Builder::spawn_unchecked::{{closure}}::{{closure}}::h612dad0a053bd4f8
[INFO] [stderr]                                at /rustc/c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54/src/libstd/thread/mod.rs:469
[INFO] [stderr]   16:     0x55c241bff358 - <std::panic::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::hcdda8b8b33395a5c
[INFO] [stderr]                                at /rustc/c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54/src/libstd/panic.rs:309
[INFO] [stderr]   17:     0x55c241bfe591 - std::panicking::try::do_call::heda4854097502649
[INFO] [stderr]                                at /rustc/c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54/src/libstd/panicking.rs:297
[INFO] [stderr]   18:     0x55c241cedcf9 - __rust_maybe_catch_panic
[INFO] [stderr]                                at src/libpanic_unwind/lib.rs:92
[INFO] [stderr]   19:     0x55c241bfe402 - std::panicking::try::h5782ca977c7441a2
[INFO] [stderr]                                at /rustc/c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54/src/libstd/panicking.rs:276
[INFO] [stderr]   20:     0x55c241bff468 - std::panic::catch_unwind::he5bfea6bab646ed5
[INFO] [stderr]                                at /rustc/c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54/src/libstd/panic.rs:388
[INFO] [stderr]   21:     0x55c241c01c65 - std::thread::Builder::spawn_unchecked::{{closure}}::h00db7594c1a883b8
[INFO] [stderr]                                at /rustc/c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54/src/libstd/thread/mod.rs:468
[INFO] [stderr]   22:     0x55c241c023e3 - <F as alloc::boxed::FnBox<A>>::call_box::h4c81b09a3878e871
[INFO] [stderr]                                at /rustc/c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54/src/liballoc/boxed.rs:734
[INFO] [stderr]   23:     0x55c241ced47d - std::sys::unix::thread::Thread::new::thread_start::h60ff5f253b4125d5
[INFO] [stderr]                                at /rustc/c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54/src/liballoc/boxed.rs:744
[INFO] [stderr]                                at src/libstd/sys_common/thread.rs:14
[INFO] [stderr]                                at src/libstd/sys/unix/thread.rs:81
[INFO] [stderr]   24:     0x7f37425d9493 - start_thread
[INFO] [stderr]   25:     0x7f3742104ace - __clone
[INFO] [stderr]   26:                0x0 - <unknown>
[INFO] [stdout] test test::it_works ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests fibers_tasque
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test src/lib.rs -  (line 10) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `"docker" "inspect" "80012b1c5da066c4755e121a334d254290eb820853b8e022ec92e560ee4d63a1"`
[INFO] running `"docker" "rm" "-f" "80012b1c5da066c4755e121a334d254290eb820853b8e022ec92e560ee4d63a1"`
[INFO] [stdout] 80012b1c5da066c4755e121a334d254290eb820853b8e022ec92e560ee4d63a1